Known as the ADL, the Anti-Defamation League is marking its 100th anniversary in the United States and its 35th year in San Diego. Established after Leo Frank, a Jew from New York, was lynched in Georgia, the ADL initially battled anti-Semitic caricatures in the media. After World War II, the ADL targeted the Ku Klux Klan and segregation, while lending support to the new state of Israel.